Hirtuleius laeviceps Stål, 1875: 81

Hennemann, Frank H. & Conle, Oskar V., 2024, Studies on Neotropical Phasmatodea XXVI: Taxonomic review of Cladomorformia tax. n., a lineage of Diapheromerinae stick insects, with the descriptions of seven new genera and 41 new species (Phasmatodea: Occidophasmata: Diapheromerinae), Zootaxa 5444 (1), pp. 1-454 : 80

3. Hirtuleius laeviceps Stål, 1875: 81 . LT [by present designation], ♀: Brasil.; Hirtuleius laeviceps Stål ; Typus; NRM-PHAS 0000649 [ NHRS]; PLT, ♀: Cotypus; NRM-PHAS 0000650 [ NHRS]. ( Figs. 30A–C, 30E–G , 83D )

Remarks: The lighter coloured specimen with whitish mottling, that bears a locality label and a red type-label stating “Typus”, is here designated as the lectotype of H. laeviceps in order to guarantee stability of Stål’s name ( Fig. 30A ). Unfortunately, this species has not yet been recorded since it’s description in 1875 why no more exact locality than “ Brazil ” is known. There however is a fully complete ♀ in the collection of ZMPA that has been briefly examined from pictures of the collection drawers taken by Paul D. Brock (NHMUK) but sadly inquiries at the corresponding collection manager have not received an answer. Thus, the locality data of this specimen are not available.

Distribution: Brazil [NHRS].

Keys to the species of Hirtuleius

♀♀ *

1. Mesothorax 4.7x longer than prothorax; mesonotum with a large conical pair of median protuberances ( Fig. 29A ); abdominal terga V and VI parallel-sided ( Fig. 30J ).............................................................. caudatus

- Mesothorax 4.9x longer than prothorax; median pair of tubercles of mesonotum moderate ( Fig. 30B ); abdominal terga V and VI with a rounded posterolateral lobe ( Fig. 30E, G ).................................................... laeviceps

[* ♀♀ of H. gracili s Conle, Hennemann, Bellanger, Lelong, Jourdan & Valero, 2020 are not known]

♂♂

1. Mesothorax 5.5x longer than prothorax; vertex hemispherical ( Fig. 30D ); cerci short, obtuse and hardly reaching posterior margin of anal segment ( Fig. 30N ); mesofemora with a slight triangular pre-median expansion on two outer ventral carinae ( Fig. 30D )..................................................................................... caudatus

- Mesothorax 5.7x longer than prothorax; vertex moderately convex and weakly bi-globose; cerci long, slender and notably projecting beyond apex of anal segment ( Fig. 90C ); no pre-median expansion of mesofemora.................... gracilis

[* ♂♂ of H. laeviceps Stål, 1875 are not known]

Figures

FIGURE 29. Hirtuleius caudatus Chopard, 1911: A. ♀ HT, habitus dorsolateral view (subgenital plate missing) [MNHN]; B. ♀ penultimate instar, habitus lateral view [MNHN]; C. ♂, habitus dorsal view [coll. TR]; D. ♂, habitus dorsal view [coll. TR].

FIGURE 30. Hirtuleius Stål, 1875: A. H. laeviceps Stål, 1875 ♀ LT, habitus dorsal view [NHRS]; B. H. laeviceps Stål, 1875 ♀ PLT, lateral view of head, pro- and mesothorax [NHRS]; C. H. laeviceps Stål, 1875 ♀ LT, dorsal view of head, prothorax and anterior portion of mesothorax [NHRS]; D. H. caudatus Chopard, 1911 ♂, lateral view of head, prothorax and anterior portion of mesothorax [coll. OC]; E. H. laeviceps Stål, 1875 ♀ LT, dorsal view of terminalia [NHRS]; F. H. laeviceps Stål, 1875 ♀ LT, lateral view of terminalia [NHRS]; G. H.laeviceps Stål, 1875 ♀ LT, ventral view of terminalia [NHRS]; H. H. caudatus Chopard, 1911 ♀ HT, lateral view of terminalia (subgenital plate missing) [MNHN]; J. H. caudatus Chopard, 1911 ♀ HT, dorsal view of terminalia (subgenital plate missing) [MNHN; K. H. caudatus Chopard, 1911 ♀ HT, ventral view of terminalia (subgenital plate missing) [MNHN]; L. H. caudatus Chopard, 1911 ♀ penultimate instar nymph, lateral view of terminalia showing long subgenital plate [MNHN]; M. H. caudatus Chopard, 1911 ♂, lateral view of terminalia [coll. OC]; N. H. caudatus Chopard, 1911 ♂, dorsal view of terminalia [coll. OC]. Arrow points to the typical posterolateral lobe of abdominal tergum VI.

FIGURE 83. Mesosternum: A. Cladomorpus rubus (Saussure, 1861) ♀ PLT [MHNG]; B. Cladomorphus phyllinus Gray, 1835 ♀ St. Catharina, Brazil [coll. FH]; C. Cladomorphus phyllinus Gray, 1835 ♂ St. Catharina, Brazil [ZMUH]; D. Hirtuleius laeviceps Stål, 1875 ♀ LT [NHRS]; E. Hirtuleius caudatus Chopard, 1911 ♂ Montagne de Chevaux, Commune de Roura, French Guiana [coll. OC]; F. Hirtuleiodes peruanus gen. n., sp. n., ♀ HT [MNHN]; G. Hirtuleiodes gibbosus (Chopard, 1911) ♂ Montagne de Chevaux, Commune de Roura, French Guiana [coll. FH]; H. Xylodus ceratocephalus (Gray, 1835) ♀ HT [MHNG]; J. Xylodus adumbratus Saussure, 1859 ♂ Espirito Santo, Brazil[ZMUH]; K. Otocraniella flagelloantennata Zompro, 2004 ♂ HT [MZUSP]. Not in scale.

FIGURE 90. Praeopercular organ of ♀♀: A. Cladomorphus phyllinus Gray, 1835 [coll. FH]; B. Cladomorpus rubus (Saussure, 1861) [ANSP]; C. Hirtuleius caudatus HT [MNHN]; D. Hirtuleiodes peruanus gen. n., sp. n. HT [MNHN]; E. Hirtuleiodes granuliceps (Conle, Hennemann & Gutiérrez, 2011) PT [MNCN]; F. Globocrania emesa (Westwood, 1859) ♀ HT of Bostra imperialis Redtenbacher, 1908 [MNHU]; G. Ocreatophasma elegans gen. n., sp. n. HT [MNHN]. Not in scale.